Innovative spectral characterisation of beached pelagic sargassum towards remote estimation of biochemical and phenotypic properties.
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| Titel: | Innovative spectral characterisation of beached pelagic sargassum towards remote estimation of biochemical and phenotypic properties. |
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| Autoren: | Fidai YA; University of Southampton, School of Geography and Environmental sciences, Highfield Campus, Southampton SO17 1BJ, United Kingdom of Great Britain and Northern Ireland; Centre for Novel Agricultural Products, Department of Biology, University of York, Wentworth Way, York YO10 5DD, United Kingdom of Great Britain and Northern Ireland. Electronic address: y.a.fidai@soton.ac.uk., Botelho Machado C; Centre for Novel Agricultural Products, Department of Biology, University of York, Wentworth Way, York YO10 5DD, United Kingdom of Great Britain and Northern Ireland., Dominguez Almela V; University of Southampton, School of Geography and Environmental sciences, Highfield Campus, Southampton SO17 1BJ, United Kingdom of Great Britain and Northern Ireland., Oxenford HA; Centre for Resource Management and Environmental Studies (CERMES), University of West Indies, Cave Hill Campus, BB11000, Barbados., Jayson-Quashigah PN; Institute for Environment and Sanitation Studies (IESS), University of Ghana, P. O. Box LG 209, Ghana., Tonon T; Centre for Novel Agricultural Products, Department of Biology, University of York, Wentworth Way, York YO10 5DD, United Kingdom of Great Britain and Northern Ireland., Dash J; University of Southampton, School of Geography and Environmental sciences, Highfield Campus, Southampton SO17 1BJ, United Kingdom of Great Britain and Northern Ireland. |
| Quelle: | The Science of the total environment [Sci Total Environ] 2024 Mar 01; Vol. 914, pp. 169789. Date of Electronic Publication: 2024 Jan 03. |
| Publikationsart: | Journal Article |
| Sprache: | English |
| Info zur Zeitschrift: | Publisher: Elsevier Country of Publication: Netherlands NLM ID: 0330500 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1879-1026 (Electronic) Linking ISSN: 00489697 NLM ISO Abbreviation: Sci Total Environ Subsets: MEDLINE |
| Imprint Name(s): | Original Publication: Amsterdam, Elsevier. |
| MeSH-Schlagworte: | Ecosystem* , Sargassum*, Biomass ; Barbados ; Aquaculture |
| Abstract: | Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. In recent years, pelagic sargassum (S. fluitans and S. natans - henceforth sargassum) macroalgal blooms have become more frequent and larger with higher biomass in the Tropical Atlantic region. They have environmental and socio-economic impacts, particularly on coastal ecosystems, tourism, fisheries and aquaculture industries, and on public health. Despite these challenges, sargassum biomass has the potential to offer commercial opportunities in the blue economy, although, it is reliant on key chemical and physical characteristics of the sargassum for specific use. In this study, we aim to utilise remotely sensed spectral profiles to determine species/morphotypes at different decomposition stages and their biochemical composition to support monitoring and valorisation of sargassum. For this, we undertook dedicated field campaigns in Barbados and Ghana to collect, for the first time, in situ spectral measurements between 350 and 2500 nm using a Spectra Vista Corp (SVC) HR-1024i field spectrometer of pelagic sargassum stranded biomass. The spectral measurements were complemented by uncrewed aerial system surveys using a DJI Phantom 4 drone and a DJI P4 multispectral instrument. Using the ground and airborne datasets this research developed an operational framework for remote detection of beached sargassum; and created spectral profiles of species/morphotypes and decomposition maps to infer biochemical composition. We were able to identify some key spectral regions, including a consistent absorption feature (920-1080 nm) found in all of the sargassum morphotype spectral profiles; we also observed distinction between fresh and recently beached sargassum particularly around 900-1000 nm. This work can support pelagic sargassum management and contribute to effective utilisation of the sargassum biomass to ultimately alleviate some of the socio-economic impacts associated with this emerging environmental challenge. (Copyright © 2024 The Authors. Published by Elsevier B.V. All rights reserved.) |
| Contributed Indexing: | Keywords: Coastal management; Macroalgae; Marine ecosystems; Remote sensing; Sargassum |
| Entry Date(s): | Date Created: 20240105 Date Completed: 20240126 Latest Revision: 20240206 |
| Update Code: | 20250114 |
| DOI: | 10.1016/j.scitotenv.2023.169789 |
| PMID: | 38181957 |
| Datenbank: | MEDLINE |
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Nájsť tento článok vo Web of Science | Abstract: | Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.<br />In recent years, pelagic sargassum (S. fluitans and S. natans - henceforth sargassum) macroalgal blooms have become more frequent and larger with higher biomass in the Tropical Atlantic region. They have environmental and socio-economic impacts, particularly on coastal ecosystems, tourism, fisheries and aquaculture industries, and on public health. Despite these challenges, sargassum biomass has the potential to offer commercial opportunities in the blue economy, although, it is reliant on key chemical and physical characteristics of the sargassum for specific use. In this study, we aim to utilise remotely sensed spectral profiles to determine species/morphotypes at different decomposition stages and their biochemical composition to support monitoring and valorisation of sargassum. For this, we undertook dedicated field campaigns in Barbados and Ghana to collect, for the first time, in situ spectral measurements between 350 and 2500 nm using a Spectra Vista Corp (SVC) HR-1024i field spectrometer of pelagic sargassum stranded biomass. The spectral measurements were complemented by uncrewed aerial system surveys using a DJI Phantom 4 drone and a DJI P4 multispectral instrument. Using the ground and airborne datasets this research developed an operational framework for remote detection of beached sargassum; and created spectral profiles of species/morphotypes and decomposition maps to infer biochemical composition. We were able to identify some key spectral regions, including a consistent absorption feature (920-1080 nm) found in all of the sargassum morphotype spectral profiles; we also observed distinction between fresh and recently beached sargassum particularly around 900-1000 nm. This work can support pelagic sargassum management and contribute to effective utilisation of the sargassum biomass to ultimately alleviate some of the socio-economic impacts associated with this emerging environmental challenge.<br /> (Copyright © 2024 The Authors. Published by Elsevier B.V. All rights reserved.) |
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| ISSN: | 1879-1026 |
| DOI: | 10.1016/j.scitotenv.2023.169789 |